Tobacco pipe



Aug. 1s, 1925. 549,876

G. HURFORD ToAcco PIPE Filed sept. 17, 1925 Inra/775 Patented Aug. 18, 1925.

UNITED STATES "'"v l,.5t,876

PATENT OFFICE.

GEORGE I-IURFOED, OF `LONDON, ENGLAND.`

TOBACCO PIPE.

Application filed September 17, 1923. Serial No. 663,201.

To all 'Lo/wm t may concern.'

Be it known that I, GEORGE HURFORD, of 5 Cannon Road, Southgate, London, N. la, England, a subject of the King 0f Great Britain, have invented certain new and usefullmprovements in or Relating to Tobacco Pipes, of which the following is a specifica` `with the tobacco in the bowl of the pipethus preventing the formation of nicotine, thereby allowing the smoker to consume all the tobacco which hitherto has been partly wasted through its having become damp.

In the pipe hereinafter described, the objects and eii'ects above mentioned are accomplished, and while, for convenience, one embodiment only of the invention will be specitically described, it is to be understood that it can be applied with but little modification to other forms.

The principle of the invention is that` the saliva from the mouth is not permitted to mix with the nicotine from'the heated tobacco but is directed to a point where it is prevented from being1 drawn back again through the mouth piece and at the same time. maintaining a direct channel for the passage of the smoke. This is effected by trapping the saliva and moisture into a chamber or sump located directly under the smoke chamber or passage.

In the preferred embodiment shown in Fig. 1 of the drawing, the pipe is so made that whilst preserving its normal exterior form, the interior is pro-vided with two chambers or passages, one directly over the other, and for simplicity of construction may be so drilled that the passages take the form of a gure 8 as shown in section Fig. 2, the upper and small passage l to provide for the withdrawing of the tobacco smoke and the lower and larger passage 2 adapted for the moisture chamber. The nicotine and saliva from the smoke passage is drained to the moisture chamber 2 b means of a slot. 3 over the whole of the length of the intervening wall between the two passages. It will be appreciated that the provision of the chamber 2 permits cooling of the smoke before passing into the mouthpiece.

'Ihe mouthpiece is of the usual shape but so drilled out of centre (indicatedl at 4L, Fig. l) to clear the moisture chamber 2, in order to be inalignment with the smoke passage l and above the level of the moisture chamber. The smoke passage being of a larger diameter than the opening 4;, in the mouthpiece an annular shoulder 5 is provided which further prevents the egress of moisture to the mouthpiece.

The hole in the bowl leading to the smoke passage and the opening in the mouthpiece being in substantial alignment without angles or bends a free and easy passage of the smoke is maintained. The opening t inthe mouthpiece being above the level of the chamber 2, therefore once the moisture from the mouth has passed into the smoke passage, it drains into the moisture chamber 2 and cannot be drawn back into the mouth piece afterhaving mixed with the nicotine. Similarly, the hole in the bowl leading to the smoke passage is also above the level of the moisture chamber so that the moisture cannot pass into the bowl after once having passed into the chamber 2.

A distinguishing mark or other means can be placed on the mouthpiece to indicate its correct position.

The portion of the pipe containing the smoke passage and moisture chamber can be of the usual length but it is to be understood that the greater thelength of the passages the more etlicient the action. For those who prefer the short chubby pipe necessitating shorter passages, satisfactory results are still obtained as called for in the present invention.

l/Vhat I claim as my invention and desire to secure by Letters Patent of the United States of America is l. A tobacco pipe comprising a bowl, a stem, said stem being constructed with a pair of superposed passages formed wholly within the stem without external openings and being interconnected throughout their passage eecentrically formed therein and a second passage formed in said stem under said smoke passage and connected therewith throughout its length by a slot, said second passage being without external openings, said mouthpiece forming a closure for said second passage and provided with an eccentric bore in alignment with said smoke passage.

In witness whereof I affix my signature.

GEORGE HURFORD. 

